Prophet Muhammad (peace and blessings be upon him) said :
The mildest punishment to be inflicted on a person in Hell is that he will be made to wear a pair of sandals made of fire which will be so hot that they will make his brain boil as something boils on a stove. He will imagine that no one is undergoing a more severe punishment, though his punishment, in reality, will be the mildest in Hell. (Al-Bukhari , Muslim)
The mildest punishment to be inflicted on a person in Hell is that he will be made to wear a pair of sandals made of fire which will be so hot that they will make his brain boil as something boils on a stove. He will imagine that no one is undergoing a more severe punishment, though his punishment, in reality, will be the mildest in Hell. (Al-Bukhari , Muslim)